Casting Breakdowns are the minor role descriptions for auditions. They appear on various audition sites and forums. I have collected the few I can find on the net. They are cross referenced on the transcripts pages.

This is a WIP. This is a list of the ones I have but they may not all be up yet.

Season 3:

E14 Light Sleeper (click)
E15 Head Case (click)
E18 Bait (click)
E23 Hiatus 1 (click)

Season 4:

E09 Twisted Sister (click)
E15 Friends and Lovers (click)
E18 Iceman (click)

Season 5:

E05 Leap of Faith (click)
E10 Corporal Punishment (click)
E12 Stakeout (click)
E15 Into the Zone (click)

Season 6:

E01 Last Man Standing (click)
E03 Capitol Punishment (click)
E14 Love and War (click)
E16 Bounce (click)
E17 South by South West (click)